1. Liquids and Solids Phase Diagrams

2. How do substances change state? Beginning StateEnding StateProcess of Change SolidLiquidMelting SolidGasSublimation LiquidSolidFreezing LiquidGasVaporization Gas Solid LiquidCondensation Deposition

3. Water phase changes The temperature remains constant during a phase change.

4. Phase Diagram  Phase Diagram: represents the phases as a function of temperature and pressure.  Critical temperature: temperature above which the vapor can not be liquefied.  Critical pressure: pressure required to liquefy at the critical temperature.  Critical point: This point specifies the conditions of temperature and pressure at which the liquid state of the substance ceases to exist. Beyond this point a gas cannot be liquefied no matter how much pressure is applied.

5. Phase Diagram with Changes by Name

6. Phase Diagram of Water temperature pressure solid liquid gas. FREEZE MELT CONDENSATION VAPORIZATION SUBLIMATION DEPOSITION

7. B temperature pressure A C D solid liquid gas. A: Triple point – the temperature and pressure at which gas, liquid, and solid form of a substance all exist in equilibrium. B: Melting curve C: Vaporization curve D: Sublimation curve E: Critical point – the temperature and pressure above which gas cannot be liquefied no matter how much pressure is applied. E

8. Water

9. Carbon dioxide

10. Carbon

11. Sulfur

12. Phase Diagrams Be able to label phases on a phase diagram: gas (vapor), liquid, solid A, solid B, solid C, etc.Be able to label phases on a phase diagram: gas (vapor), liquid, solid A, solid B, solid C, etc. Be able to label parts of a phase diagram: triple point, critical point, melting curve, vaporization curve, sublimation curve.Be able to label parts of a phase diagram: triple point, critical point, melting curve, vaporization curve, sublimation curve. Be able to label arrows on a phase diagram: melting, freezing, vaporization, condensation, sublimation, deposition.Be able to label arrows on a phase diagram: melting, freezing, vaporization, condensation, sublimation, deposition. For a given temperature and pressure, be able to identify the phase: gas, liquid, solid A, solid B, etc.For a given temperature and pressure, be able to identify the phase: gas, liquid, solid A, solid B, etc.